同样，安全开关也可以是机械互锁装置，当汽车挂挡后不允许点火开关转到启动位置。

It can also be a mechanical interlock device that will not let the ignition switch turn to start if the car is in the gear.

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启动安全开关又称为空档启动开关。

The starting safety switch is also called a neutral start switch.

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压杆抬起，即停机； 盖子没有盖好，机器不能启动； 多重限位开关，保证安全生产；

One interlock stops the machine when the lever is lifted, A second interlock prevents the machine from starting if cover is not in place;

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